pfSense integration logs processing

Hello everyone,

I'm implementing the crowdsec connector for my pfsense.
Howewer, my pfsense is connected to a siem that process logs in syslog format and I can only choose one format per pfsense.

From my test, crowdsec integration doesn't seem to support this format yet, is their a setting somewhere or can I modify a grok pattern somewhere?

Regards and thank you all,
Fab